Attachment for tire-inflating pumps.



H. K. AUSTIN. ATTACHMENT FOR TIRE INPLATING PUMPS.

APPLmATxoN FILED Nov.12. 1909.

Patented 001;. 1o, 1911. y

erf

HENRY K. AUSTIN, OF REDING, MASSACHUSETTS.

ATTACHMENT FOR- TIRE-INFLATING 'PUMES Specification of Letters Fatent.

Patented Get. Ri, limi.,

applicaties mee november ie, isos. serial no. 527,792.2.

To all whom it may concern:

Be it llrnown that l, HENRY K. AUsriN, r Reading, in the county of Middlesex and htate ot Massachusetts, have invented eertain new and useful Improvements in Attaelnnents for Tire-lnliating Pumps, of wliieb the tollowin is a specification.

This invention relates to air pumps used .for initiating pneumatic tires, and it has for its objeet, to provide improved means for connecting the air delivering Conduit oi2 an inria-ting pump with a tire valve.7

llie invention consists in tbe improve-- ments which ll will 'now proceed to describe and claim.

@it tbe accompanying drawings, forming a part of this speeiieation, Figure l is a longitudinal sectional View illustrating my invention. Fig. i2 is a similar View oi a moldi-l iieation.

Referring to tbe drawing, @designates a plug of elastic rubber having` a nibstantially` i'iat inner end an air passage ll extend- 'tberetbrougli from the inner end. Said air passage is provided Wit-li an enlargement l2, a contracted port-ion 13, and a second enlargement if; of tapering oim, tbe Wider end which is at tbe outer end of the section. This constriietion enables tbe see-- tion to be sprung or forced onto a valve nipple l5 of the form illustrated in Fig. l, the enlargement llt receiving the outer end et the nipple and facilitating; the application of the coupling; section thereto, While tbe Contracted portion 13 bugs the periphery of the nipple 15, and thus maintains a firm and air tight connection between the plug 'l0 and the nipple.

In Fig. l the plug'l() is illustrated as resting against a seat Jformed by an annular flattened flange 16 of a rigid tube or nipple 17 inserted in tlie end of a flexible tube 18. A telescopic holder comprising' an outer member 19 and an inner member 20 embraces the plug l0, and is adapted to press tbe inner end of the latter' against the seat formed by flange 16. The outer member. 19 has a hea d 21 which is perforated for the passage of the nipple and to engage a shoulder Q2 formed above flange 16. 'The inner member 2O has a flange 23 Which bears upon. the. marginal portion of the outer end ot' the plug 10. The members 19 and 2O are screw threaded so that relative rotation of said members in one direction is adapted to shorten the telescopic caslng and thus press tbe inner end oi the elastic plug l() against4 the seat iformedbjv ilange i6. lt is obvious that rotation of said members in the opposite direction effects their separation to permit removal of the plu'.

In Fig. l have illustrated a slight modification. in this form tbe nipple is inserted in the outer end of iiexible tube 3l, and te 'tbe outer end oi? tbis nipple is :1t-- taolied a rigid tubular elbow 3Q, tbe outer end ot which is provided with a flange 33 Aforming a seat the ping l0.

claim:

l. The combination with a rigid tube liar ing a nipple at one.,y end adapted to fric tionally engage tbe bore of a rubber tube,

, tlie other end said rigid tube being: provided with a filet-tened annular ila] *ge torniing a seat, of an elv ie termii e .e

sampling plug hearing; upon said and provided with bore to receive tbe nipple of a tire valve, and a telesr. ipie casina1 oi metai termed oit members independent it said tube and inelosinlej said plug", one et' said members engaging flange, said members 4having overlapping; portions engaging eaeli other a pointinterniediate tlie ends of said plug, whereby tbe ',asingg may be Contracted to press said plug against said seat.

2. The Combination Witli a rigid tube liav ing a nipple at one end adapted to trietionally engage the bore. of a rubber tube the other end of said rigid' tube beingr provided Witb a flange, one 'face of which. forms a seat, of an elastic terminal. coupling plug' bearing upon said seat and provided with a bore to receive tbe nipple ot a tire valve. and a telescopio easing of sheet metal formed oi vmembers independent of said tube, and inolosing said plug, one oi said members engaging said flange on the side opposite said seat, said members having overlapping inter-engaging portions, whereby the easing may be contracted to press said plug' against said seat. A

3. 'The combination With a rigid tube having.;` a nipple at one end adapted to frictionally engage the bore of a rubber tube the other end of said rigid ltube being' provided with a flange, one face of which forms a seat, oi an elastic terminal couplingA plug bearing upon said seat and provided with :L bore to receive the nipple of a tire Valve, may be contracted to press Suid plug against l und a telescopic casing formed of members said seat, 10 .independent of Said tube, und inelosing said In testimony whereof I Imve affixed my plug, one of 'said members engaging Suid signature, in presence of two witnesses. iange on the side opposite said seat, said HENRY If, AUSTIN. members having overlapping portions en- Wtnessesz gagging each other at. a point intermediate' i C. F. BROWN, the ends of said plug whereby the easing E. BATGnnLDEn. 

